Chapter on the Detailed Explanation of Prayer, Including the Obligatory and Recommended, and What is Permissible and Not Permissible.

So this report is also like the two preceding ones, because the intended meaning of the wording in the report is: ‘If he remembers it while standing before bowing, then let him say the Takbir; but if he bows without remembering, then let him continue with his prayer.’ There is nothing in the report that says: ‘If he bows while aware that he did not say the Takbir, then let him continue with his prayer.’ And since the interpretation we have given is possible, it does not contradict what has already been presented. The Shaykh (Al-Mufid), may Allah سبحانه وتعالى support him, said: "And if one leaves out the recitation due to forgetfulness, then there is no obligation to repeat the prayer."